I’m not aware of any web server that’s still maintained and has wide adoption (so no web servers written by a teenager in Haskell to just fuck around and figure out how web servers work) that doesn’t support the ACME protocol. I highly doubt Manjaro doesn’t use something mainline like nginx.

The renew failing should’ve sent someone a warning that manual intervention is required. This happens from time to time but the fact this went longer than a few minutes unfortunately says a lot about the project.